US 12,440,678 B2
Stimulation circuitry in an implantable stimulator device for providing a tissue voltage as useful during neural response sensing
Goran N. Marnfeldt, Valencia, CA (US)
Assigned to Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed by Boston Scientific Neuromodulation Corporation, Valencia, CA (US)
Filed on Oct. 25, 2022, as Appl. No. 18/049,525.
Claims priority of provisional application 63/263,318, filed on Oct. 29, 2021.
Prior Publication US 2023/0138443 A1, May 4, 2023
Int. Cl. A61N 1/36 (2006.01); A61N 1/02 (2006.01)
CPC A61N 1/36125 (2013.01) [A61N 1/025 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A stimulator device configured to provide stimulation with a first phase and a second phase, comprising:
a plurality of electrode nodes, wherein each of the electrode nodes is coupleable to a different electrode configured to contact a patient's tissue;
driver circuitry configurable to drive at least two of the electrode nodes during the first phase to provide a current through the tissue;
a first bus configured to receive a bias voltage from biasing circuitry;
a plurality of first switches, wherein each of the first switches is connected between a different one of the electrode nodes and the first bus;
a second bus;
a plurality of second switches, wherein each of the second switches is connected between a different one of the electrode nodes and the second bus; and
control circuitry configured to
close at least one of the first switches to provide a common mode voltage to the tissue, and
close the second switches connected to the at least two electrode nodes during the second phase, wherein the second phase comprises a passive recovery phase to recover charge stored in current paths of the at least two electrodes.